Padlock



Nov. 6,1928." 4 1,690,938 M. c. MAXWELL PADLOCK Filed Oct. 20. 1925 Patented Nov. 6, 1928.

UNITED. STATES PATENT OFFICE.

MAXWELL c. MAXWELL, or STAMFORD, ooNNEomo'Un'AssIeMoR "r THEYALE AND TOWNE MANUFACTURING COMPANY, or STAMFORD, CONNECTICUT.

IPADLOCK.

Application filed October 20, 1925. Serial No. 63,627.

This invention relates to improvements in padlocks and has reference more particularly to the construction of the shackle.

One object of the invention is to so construct the shackle of a padlock that the same shall be adaptable for use for special purposes where a shackle of the usual form would be objectionable.

Vith this and other objects in view, the

invention consists in certain novel features of construction as hereinafter set forth and pointed out in the claims.

. In the accompanying drawings;

Figure 1 is a view partly in elevation and partly in section showing a shackle embodying my improvements;

. Figure 2 is a View in section on the line 2-2 of Figure 1;

Figure 3 is a view showing a modification;

Figure 4 is a transverse section of the construction shown in Figure 3;

Figure 5 is a view showing another em bodiment of the invention, and

Figure 6 is a view in cross section of the construction shown in Figure 5.

The casing of a padlock is indicated at 1 and contains suitable key-controlled locking mechanism including tumblers or dogs 2 for cooperation with ratchet teeth 3 of the arms so 1, 5 of a shackle 6.

Located on the shackle at one corner portion thereof between the cross member or bow 7 and the shackle leg 1, is an inwardly projecting plate or member 8 adapted to engage in devices to be locked by the shackle, such for example, as notches in parts of a tire bracket, while the leg 5 of the shackle may pass through holes in such parts. Theplate or member 8 is preferably between and hasits planes of the front and rear sides of the punched blank will be squeezed into shape with the use of suitable dies.

In the form of the invention shown in F igures 3 and 4, the inwardly projecting corner member is made of a separate piece of metal opposite faces parallel with the parallel the integral web forming the member 8. The

and applied to a shackle of the ordinary U- shape. The corner-member 8 may be made of sheet metal and stamped down on the corner portionof the shackle as shown in Figure l,.-the inwardly projecting parallel portions of the sheet forming the corner member 8".

If desired the corner member may be formed of a single separate piece of metal 8, and a corner portionof the'shackle provided with a slot to receive it, such corner member being secured in place by rivets 10, as shown in Figures 5 and 6.

Other means of providing a shackle with an inwardly projecting corner member may be resorted to without departing'from the spirit of my invention or limiting its scope and hence I do not restrict myself to the precise details herein set forth.

It will be'noted that the invention does not involve any deformation or reconstruction of the shackle and may be applied to existing shackles as well as to those hereafter produced. The device serves effectually to prevent displacement of the lock relative to the locked device and by having the de vice entirely within the lines of an ordinary lock accidental breakingor bending of the device is avoided as there is nothing to come in contact with passing objects.

Having fully described my invention what I claim as new and desire to secure by Letinwardly projecting member lying entirely within the lines of the shackle, said member having an opening. v

3. A lock shackle provided in a corner formed by its cross member and one leg'with an. integral inwardly projecting member having an opening.

1. The combination of 'a lock casing and a shackle to enter the same, said shackle having a general U-shape and provided in a corner formed by a leg and the cross member thereof with an inwardly projecting member lying entirely within the lines of the shackle.

5. A lock shackle comprising parallel legs from the corner formed by the cross member and one of the legs and lying entirely Within the lines of the shackle. 10

In testimony whereof, I have signed this specification.

MAXWELL C. MAXWVELL. 

